Scholarlink

<p>Wastewater management continues to be a significant environmental and public health issue in developing nations, especially in rural regions with inadequate sanitation infrastructure. This study provides a thorough assessment of municipal wastewater from 20 rural regions of Punjab, Pakistan, utilizing 60 composite samples tested in accordance with Punjab Environmental Quality Standards (PEQS). The findings reveal that the average chemical oxygen demand (COD: 335&#xa0;mg/L) and biochemical oxygen demand (BOD: 191&#xa0;mg/L) substantially above allowable thresholds, although the COD/BOD ratio (1.8) and low dissolved oxygen (DO &lt; 0.2&#xa0;mg/L) corroborate the prevalence of biodegradable organic contamination. Microbial contamination was significant, with total coliform levels at 10⁶ MPN/100&#xa0;mL and E. coli at 10<sup>5</sup> MPN/100&#xa0;mL, greatly surpassing acceptable thresholds. Physicochemical measurements, including total suspended solids (TSS) and total dissolved solids (TDS), exhibited regional heterogeneity with occasional exceedances, although heavy metals predominantly maintained under permissible limits. Statistical analysis demonstrated moderate to high variability in physicochemical parameters (CV: 20–49.9%) and extreme variability in microbiological markers (CV &gt; 100%). The one-sample t-test findings demonstrated a substantial surpassing of regulatory limitations (<i>p</i> &lt; 0.05), while Moran’s I revealed pronounced geographical clustering of microbial contamination (<i>p</i> &lt; 0.01), underscoring localized pollution hotspots. The results highlight significant environmental and public health hazards and advocate for the employment of decentralized, cluster-oriented wastewater treatment systems, which may establish a crucial foundation for developing economical treatment strategies in rural areas.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Baseline Assessment of Municipal Wastewater Parameters in 20 Rural Areas of Punjab, Pakistan: A First-Ever Framework for Development of Sustainable Decentralized Treatment Plants

  • 期刊论文

  • 发表日期：

    2026年5月29日

查看全文
  • Abdul Manan,
  • Tausif Ahmad,
  • Syed Nadir Hussain,
  • Hafiz Muhammad Anwaar Asghar

摘要

Wastewater management continues to be a significant environmental and public health issue in developing nations, especially in rural regions with inadequate sanitation infrastructure. This study provides a thorough assessment of municipal wastewater from 20 rural regions of Punjab, Pakistan, utilizing 60 composite samples tested in accordance with Punjab Environmental Quality Standards (PEQS). The findings reveal that the average chemical oxygen demand (COD: 335 mg/L) and biochemical oxygen demand (BOD: 191 mg/L) substantially above allowable thresholds, although the COD/BOD ratio (1.8) and low dissolved oxygen (DO < 0.2 mg/L) corroborate the prevalence of biodegradable organic contamination. Microbial contamination was significant, with total coliform levels at 10⁶ MPN/100 mL and E. coli at 105 MPN/100 mL, greatly surpassing acceptable thresholds. Physicochemical measurements, including total suspended solids (TSS) and total dissolved solids (TDS), exhibited regional heterogeneity with occasional exceedances, although heavy metals predominantly maintained under permissible limits. Statistical analysis demonstrated moderate to high variability in physicochemical parameters (CV: 20–49.9%) and extreme variability in microbiological markers (CV > 100%). The one-sample t-test findings demonstrated a substantial surpassing of regulatory limitations (p < 0.05), while Moran’s I revealed pronounced geographical clustering of microbial contamination (p < 0.01), underscoring localized pollution hotspots. The results highlight significant environmental and public health hazards and advocate for the employment of decentralized, cluster-oriented wastewater treatment systems, which may establish a crucial foundation for developing economical treatment strategies in rural areas.